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144230030221 = 352214095001
BaseRepresentation
bin1000011001010011000…
…1111001101110001101
3111210021122020200100011
42012110301321232031
54330340341431341
6150131450033221
713264104012634
oct2062461715615
9453248220304
10144230030221
1156193101492
1223b52418811
13107a7053664
146da334051b
153b42283b81
hex2194c79b8d

144230030221 has 4 divisors (see below), whose sum is σ = 144234160444. Its totient is φ = 144225900000.

The previous prime is 144230030177. The next prime is 144230030233. The reversal of 144230030221 is 122030032441.

144230030221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122030032441 = 170971404349.

It can be written as a sum of positive squares in 2 ways, for example, as 117272002500 + 26958027721 = 342450^2 + 164189^2 .

It is a cyclic number.

It is not a de Polignac number, because 144230030221 - 27 = 144230030093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144230030192 and 144230030201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144230030821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2012280 + ... + 2082721.

It is an arithmetic number, because the mean of its divisors is an integer number (36058540111).

Almost surely, 2144230030221 is an apocalyptic number.

It is an amenable number.

144230030221 is a deficient number, since it is larger than the sum of its proper divisors (4130223).

144230030221 is an equidigital number, since it uses as much as digits as its factorization.

144230030221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4130222.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 144230030221 its reverse (122030032441), we get a palindrome (266260062662).

The spelling of 144230030221 in words is "one hundred forty-four billion, two hundred thirty million, thirty thousand, two hundred twenty-one".

Divisors: 1 35221 4095001 144230030221